16 Then Pharaoh called for Moses and Aaron in haste; and he said, I have sinned against the Lord your God, and against you. 17 Now therefore forgive, I pray thee, my sin only this once, and entreat the Lord your God, that he may take away from me this death only.
Pharaoh repents once more, again admitting that he has sinned against the Lord. This time, though, he also takes the dramatic step of setting restrictions on the forgiveness that he seeks. “Forgive, I pray thee, my sin only this once,” he tells Moses. Also he asks that God “may take away from me this death only.” This seems to be Pharaoh saying he is so sincere about this repentance that he doesn’t need any other chances. If he were to violate his word again, then God and Moses shouldn’t forgive him any more! Then the punishment and the death that he asks to be spared from this time should be delivered in full measure.
Thus, Pharaoh was literally, and of his own volition, putting the lives of himself and the other Egyptians on the line. He was willingly inviting destruction should he go back on his word, and so one would think that this would be the end of the whole affair.
But it wasn’t. Even after this, Pharaoh would go back on his word yet again, and his words that God should withhold forgiveness and administer death would prove prophetic.